Polarized current changes the exchange bias in a current-in-plane spin valve

Tang, Xiaoli; Zhang, Huaiwu; Su, Hua; Jing, Yulan; Zhang, Zhong

doi:10.1016/j.jmmm.2008.11.100

Cited by 9 publications

(1 citation statement)

References 39 publications

(51 reference statements)

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“…However, because of scattering processes, conduction electron flow is not confined to specific layers of the EBSV structure, but can move from layer to layer, thereby transferring spin angular momentum between the layers. In a series of papers, Tang et al [30][31][32][33][34][35] reported on the effects of high CIP currents on the exchange bias in room-temperature experiments. They used a standard four-probe method to measure CIP-MR of sputtered EBSV of the form F/N/F/AFM with free F = 10-12 nm of NiFe, N = 4 nm of Cu, pinned F = 3-12 nm of NiFe and AFM = 15 nm of FeMn.…”

Section: Initial Experiments: Antiferromagnetic Spin-transfer Torque-current-in-plane Experimentsmentioning

confidence: 99%

Antiferromagnetic metal spintronics

MacDonald

Tsoi

2011

Phil. Trans. R. Soc. A.

303

255

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In this brief review, we explain the theoretical basis for the notion that spin-transfer torques (STTs) and giant-magnetoresistance effects can, in principle, occur in circuits containing only normal and antiferromagnetic (AFM) materials, and for the notion that antiferromagnets can play a role in STT phenomena in circuits containing both ferromagnetic and AFM elements. We review the experimental literature that provides partial evidence for these AFM spintronic effects but demonstrates that, like exchangebias effects, they are sensitive to details of interface structure that are not always under experimental control. Finally, we speculate briefly on some strategies that might advance progress.

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Section: Initial Experiments: Antiferromagnetic Spin-transfer Torque-current-in-plane Experimentsmentioning

confidence: 99%

Antiferromagnetic metal spintronics

MacDonald

Tsoi

2011

Phil. Trans. R. Soc. A.

303

255

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Magnetic Nanostructures: Synthesis, Properties, and Applications

Shukla

Deheri²,

Ramanujan

2013

Springer Handbook of Nanomaterials

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Spin torque-driven switching of exchange bias in a spin valve

Tang

Zhang

et al. 2009

Journal of Applied Physics

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We show that the strength and direction of the exchange bias in a spin valve can be changed and recovered by applying a spin-polarized current pulse. In other words, once the exchange bias has been changed by a spin-polarized current pulse with the external magnetic field antiparallel to the exchange bias direction, it can be returned to the initial state by a current pulse of the same magnitude with reversal of the external field. Furthermore, the exchange bias field reverts to the same magnitude, irrespective of whether one or multiple current pulses are applied. Based on a model for spin-momentum transfer, the experimental observations can be rationalized in terms of changing micromagnetic distributions at the ferromagnet/antiferromagnet interface.

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Polarized current changes the exchange bias in a current-in-plane spin valve

Cited by 9 publications

References 39 publications

Antiferromagnetic metal spintronics

Antiferromagnetic metal spintronics

Magnetic Nanostructures: Synthesis, Properties, and Applications

Spin torque-driven switching of exchange bias in a spin valve

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